1. Frequency: 30KHz
2. Reset time: 0.5s, automatic
3. Battery: 9V alkaline or lithium battery (not included)
4. Power consumption: 270mW
5. Operating current: less than 50mA
6. Alarm mode: sound and light synchronization alarm or vibration alarm
7. Alarm indication:
- Continuous yellow LED: has detected the target    
- Alarm signal: sound mode, buzzer, red LED
- Flashing green LED: power on                        
- Vibration mode: vibration and red LED
- Flashing red LED: low voltage indication
8. Weight: about 290g
9. Size: about 37.8 x 8 x 3.5cm

Features:
1. Simple and easy to operate, can detect all kinds of metal objects hidden in the human body
2. Fine workmanship, lightweight and portable, wear-resistant and durable, large detection area, rapid response
3. Free choice between sound alarm and vibration alarm switch
4. Simple to use, three gears: on key, sound alarm key, vibration alarm key
5. Low voltage indication
6. Easy to change the battery
7. With charging jack
6. Safety: harmless to cardiac device wearers, pregnant women, floppy disks, film, video tapes, etc.